I know #1 is a joke but for everyone else in history that's why people wore the aketon, or gambeson or padded/quilted tunic under mail. Provided impact protection and made mail more comfortable!

the point is its supposed to be cool
(temperature wise)

Is this a copypasta?

Claymore mines are terrifying. Most commonly, though, they are used in large open areas and may be problematic if your home is not rural.

Claymores fire steel balls at a wide 60 degree angle. It's stated that they are guaranteed a kill at 50 meters but can still be dangerous out past 150 meters.

While claymores are often depicted as being laser or tripwire activated, they are most often activated using a clacker detonator held by an operator. They can be rigged to detonate via both electrical and mechanical means, so they can potentially be activated by a variety of methods.

As we saw in Fellowship

LOTR is fantasy though

Literally anything you can DIY yourself can be bought at a lower dollar and/or time cost. That's not why people make things.

There are many reasons why people make things, but generally speaking it's because you can make exactly what you want, in terms of size, material and design.

It's fun, interesting, you learn stuff, and you get the joy of doing. This guy didn't want an off the shelf weighted blanket, even if it is cheaper/easier to get/whatever.

Sometimes, when you make things, they don't work. Or you realise that you made the wrong thing, or made it the wrong way. But that's when you get the buzz of knowing that you learned something, and the excitement of planning how to do it better.

Knitting takes a long time and the yarn usually costs more than a machine made version would. But I have friends who still have beanies and scarves that I made them 10 years ago when I was learning to knit. Why? Because they know that I made it for them, which gives them feels.

One benefit of a chainmail blanket like this though is easy even distribution of the weight.